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<TITLE>[Chapter 24] 24.8 java.io.CharArrayWriter (JDK 1.1)</TITLE>
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<h2 CLASS=sect1><A CLASS="TITLE" NAME="JNUT2-CH-24-SECT-8">24.8 java.io.CharArrayWriter (JDK 1.1)</A></h2>

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<h3 CLASS=sect2><A CLASS="TITLE" NAME="JNUT2-CH-24-SECT-8.1"></A></h3>
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<P CLASS=para>
This class is a character output stream that uses an
internal character array as the destination of characters
written to it.  When you create a <tt CLASS=literal>CharArrayWriter</tt>,
you may optionally specify an initial size for the character
array, but you do not specify the character array
itself--this array is managed internally by the
<tt CLASS=literal>CharArrayWriter</tt>, and grows as necessary to
accommodate all the characters written to it.  The
<tt CLASS=literal>toString()</tt> and <tt CLASS=literal>toCharArray()</tt> methods return
a copy of all characters written to the stream, either as a
string or as an array of characters.

<P CLASS=para>
<tt CLASS=literal>CharArrayWriter</tt> defines the standard
<tt CLASS=literal>write()</tt>, <tt CLASS=literal>flush()</tt>, and <tt CLASS=literal>close()</tt> methods
that all <tt CLASS=literal>Writer</tt> subclasses do.  It also defines a
few other useful methods.  <tt CLASS=literal>size()</tt> returns the number
of characters that have been written to the stream.
<tt CLASS=literal>reset()</tt> resets the stream to its initial state, with
an empty character array; this is more efficient than
creating a new <tt CLASS=literal>CharArrayWriter</tt>.  Finally,
<tt CLASS=literal>writeTo()</tt> writes the contents of the internal
character array to some other specified character stream.

<P CLASS=para>
<tt CLASS=literal>CharArrayWriter</tt> is the character-stream analog of
<tt CLASS=literal>ByteArrayOutputStream</tt>, and is quite similar to
<tt CLASS=literal>StringWriter</tt>.

<DIV CLASS=screen>
<P>
<PRE>
public class <tt CLASS=literal>CharArrayWriter</tt> extends Writer {
    // <tt CLASS=literal>Public Constructors</tt>
            public <tt CLASS=literal>CharArrayWriter</tt>();
            public <tt CLASS=literal>CharArrayWriter</tt>(int <tt CLASS=literal>initialSize</tt>);
    // <tt CLASS=literal>Protected Instance Variables</tt>
            protected char[] <tt CLASS=literal>buf</tt>;
            protected int <tt CLASS=literal>count</tt>;
    // <tt CLASS=literal>Public Instance Methods</tt>
            public void <tt CLASS=literal>close</tt>();  //<tt CLASS=literal> Defines Writer</tt>
            public void <tt CLASS=literal>flush</tt>();  //<tt CLASS=literal> Defines Writer</tt>
            public void <tt CLASS=literal>reset</tt>();
            public int <tt CLASS=literal>size</tt>();
            public char[] <tt CLASS=literal>toCharArray</tt>();
            public String <tt CLASS=literal>toString</tt>();  //<tt CLASS=literal> Overrides Object</tt>
            public void <tt CLASS=literal>write</tt>(int <tt CLASS=literal>c</tt>);  //<tt CLASS=literal> Overrides Writer</tt>
            public void <tt CLASS=literal>write</tt>(char[] <tt CLASS=literal>c</tt>, int <tt CLASS=literal>off</tt>, int <tt CLASS=literal>len</tt>);  //<tt CLASS=literal> Defines Writer</tt>
            public void <tt CLASS=literal>write</tt>(String <tt CLASS=literal>str</tt>, int <tt CLASS=literal>off</tt>, int <tt CLASS=literal>len</tt>);  //<tt CLASS=literal> Overrides Writer</tt>
            public void <tt CLASS=literal>writeTo</tt>(Writer <tt CLASS=literal>out</tt>) throws IOException;
}
</PRE>
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<DIV CLASS=sect2>
<h3 CLASS=sect2><A CLASS="TITLE" NAME="JNUT2-CH-24-SECT-8.2">Hierarchy:</A></h3>

<P CLASS=para>
Object->Writer->CharArrayWriter

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